首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   3033篇
  免费   497篇
各国政治   470篇
工人农民   142篇
世界政治   308篇
外交国际关系   169篇
法律   1363篇
中国政治   79篇
政治理论   965篇
综合类   34篇
  2023年   13篇
  2022年   11篇
  2021年   43篇
  2020年   73篇
  2019年   198篇
  2018年   153篇
  2017年   183篇
  2016年   205篇
  2015年   167篇
  2014年   164篇
  2013年   731篇
  2012年   134篇
  2011年   133篇
  2010年   148篇
  2009年   88篇
  2008年   119篇
  2007年   92篇
  2006年   80篇
  2005年   65篇
  2004年   61篇
  2003年   50篇
  2002年   49篇
  2001年   39篇
  2000年   45篇
  1999年   38篇
  1998年   20篇
  1997年   31篇
  1996年   25篇
  1995年   28篇
  1994年   27篇
  1993年   30篇
  1992年   28篇
  1991年   26篇
  1990年   22篇
  1989年   14篇
  1988年   16篇
  1987年   13篇
  1986年   18篇
  1985年   16篇
  1984年   16篇
  1983年   17篇
  1982年   8篇
  1981年   18篇
  1980年   9篇
  1979年   8篇
  1978年   14篇
  1977年   8篇
  1976年   4篇
  1974年   6篇
  1967年   5篇
排序方式: 共有3530条查询结果,搜索用时 15 毫秒
91.
This article makes a further contribution to opening the ‘black box’ of micropractices in ministry–agency relationships. We argue that the mechanisms that come into play in the course of institutionalizing agencification reforms – such as renegotiating mutual roles and rules in ministry–agency interactions – are only poorly covered in the existing literature. To adequately address the negotiated and contingent nature of de facto agency autonomy and political control, we develop an interpretive approach based on the concept of ‘boundary work’. The empirical focus is on ministry–agency interactions at the science–policy nexus in the contested policy field of food safety. By studying actors' stories about the institutionalization processes following the fundamental reorganization of the German food safety administration in the wake of the BSE crisis from a longitudinal perspective, we show how actors manage boundary conflicts via increasingly differentiated backstage coordination.  相似文献   
92.
Scholars' criticism of transparency in public–private partnerships (PPPs) often focuses on ‘external’ transparency, that is, the extent to which internal information is visible to the outside world. However, to achieve external transparency, internal transparency – the availability and inferability of information for the public procurer and the private party – is crucial. In this article we analyse input, process, and output transparency from three different perspectives (institutional, cognitive, and strategic) in four PPPs in the Netherlands. We conclude that input transparency is high, but process and output transparency less so. Moreover, output transparency has gained importance in PPPs. Whether this is problematic depends on the PPPs' institutional environment. In some partnerships the desired output is uncontested and predetermined by clear standards in the institutional environment, whereas other PPPs deal with contested output norms, decreasing the partnerships' transparency. These results nuance the current debate on the lack of transparency in PPPs.  相似文献   
93.
94.
95.
96.
97.
98.
Indigenous peoples’ right to prior consultation and to informed consent represents the basis of the new global model shaping state–indigenous relations. Consultation processes promise to enable indigenous people to determine their own development and are especially promoted when extraction projects with significant socio-environmental impacts are planned on indigenous lands. In this article we draw on debates on participatory development in order to analyse the first state-led consultations in Bolivia’s and Peru’s hydrocarbon sectors (2007–14). The analysis shows that effective participation has been limited by (1) an absence of indigenous ownership of the processes; (2) indigenous groups’ difficulties defending or even articulating their own visions and demands; and (3) limited or very general outcomes. The study identifies real-life challenges, such as power asymmetries, a ‘communication hurdle’ and appropriate timing – as well as simplistic assumptions underlying the consultation approach – that account for the unfulfilled promises of this new model.  相似文献   
99.
Lophophora is a member of the Cactaceae family, which contains two species: Lophophora williamsii and L. diffusa. Lophophora williamsii is an illegal plant containing mescaline, a hallucinogenic alkaloid. In this study, a novel method based on a single nucleotide polymorphism (SNP) assay was developed for identifying L. williamsii; this assay reliably detects SNPs within chloroplast DNA (rbcL, matK, and trnL-trnF IGS) and was validated for identifying Lophophora and L. williamsii simultaneously. The chloroplast DNA sequences from four L. williamsii and three L. diffusa plants were obtained and compared using DNA sequence data from approximately 300 other Cactaceae species available in GenBank. From this sequence data, a total of seven SNPs were determined to be suitable for identifying L. williamsii. A multiplex assay was constructed using the ABI PRISM® SNaPshot™ Multiplex Kit (Applied Biosystems, Forster City, CA) to analyze species-specific SNPs. Using this multiplex assay, we clearly distinguished the Lophophora among 19 species in the Cactaceae family. Additionally, L. williamsii was distinguished from L. diffusa. These results suggest that the newly developed assay may help resolve crimes related to illegal distribution and use. This multiplex assay will be useful for the genetic identification of L. williamsii and can complement conventional methods of detecting mescaline.  相似文献   
100.
Journal of Youth and Adolescence - Young adults experience social role transitions across multiple life domains, and a deeper understanding of the ways in which these simultaneous transition...  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号